There are also modules with a bit more flexible promisification functions, e.g. es6-promisify.
A module is just a file. One script is one module. As simple as that.… other modules.… Module-level scope.Each module has its own top-level scope.… Modules without any path are called “bare” modules. Such modules are not allowed in import.… bare modules and much more, like CSS/HTML modules.
see the current state of support for language features is https://compat-table.github.io/compat-table/es6… show the current state of support for various features:
https://compat-table.github.io/compat-table/es6
The module path must be a primitive string, can’t be a function call.… That’s a good thing, as code structure can be analyzed, modules can be gathered and bundled into one… But how can we import a module dynamically, on-demand?… The import() expression.The import(module) expression loads the module and returns a promise that resolves… into a module object that contains all its exports.
Modules that declare a single entity, e.g. a module user.js exports only class User.… Modules provide a special export default (“the default export”) syntax to make the “one thing per module… Re-export:
export {x [as y], ...} from "module"
export * from "module" (doesn’t… export:
import x from "module"
import {default as x} from "module"
Import all… :
import * as obj from "module"
Import the module (its code runs), but do not assign any
Modern browsers allow top-level await in modules
In modern browsers, await on top level works… just fine, when we’re inside a module.… We’ll cover modules in article Modules, introduction.… If we’re not using modules
Modern scripts use JavaScript modules where such a thing doesn’t happen.… In-browser, unless we’re using modules, global functions and variables declared with var become a property
Modern JavaScript supports “classes” and “modules” – advanced language structures (we’ll surely get to… Later, when your code is all in classes and modules, you may omit it.
Now, it can be used for JavaScript modules.… But that’s an advanced topic, we’ll talk about modules in another part of the tutorial.
When the regexp engine (program module that implements searching for regexps) comes across \b, it checks
using it, there’s a good chance they can replace it with a modern language construct or a JavaScript Module
demo chat, you can also download it and run locally (if you’re familiar with Node.js and can install modules
Please note:
For our own scripts we could use JavaScript modules here, but they are not widely
There are other real-world examples of asynchronous actions, e.g. loading scripts and modules (we’ll
And what if the content is loaded by a third-party module?
Chat example.Let’s review a chat example using browser WebSocket API and Node.js WebSocket module https